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All Journal Teknik Sipil dan Arsitektur Jurnal Teknik Sipil dan Arsitektur Spektrum Sipil
Sektiaji, Hutama
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Civil Engineering, Building, Construction & Architecture Engineering Transportation

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PEMETAAN SARANA PERALATAN KHUSUS UNTUK PEMELIHARAAN BALAS PADA JALUR KERETA API DI INDONESIA: Mapping the Railway Maintenance Fleet for Ballast Maintenance in Indonesia Dhaniswara, Aryadhatu; Muthohar, Imam; Sektiaji, Hutama
Spektrum Sipil Vol 12 No 2 (2025): SPEKTRUM SIPIL
Publisher : Jurusan Teknik Sipil Fakultas Teknik Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/spektrum.v12i2.406

Abstract

Ballast maintenance is a crucial activity to ensure the reliability of railway tracks in Indonesia. This study aims to map the demand for special equipment required in ballast maintenance based on track length, maintenance frequency, and equipment productivity. The methodology involves calculating the average productivity of several types of ballast maintenance machines, such as tamping machines, ballast regulators & profiling, and ballast stabilization & consolidation, and comparing the results with the availability of equipment owned by the Directorate General of Railways, PT Kereta Api Indonesia, and private operators. The results indicate that although the availability of tamping machines is relatively sufficient, there is a significant shortage of ballast regulators & profiling as well as ballast stabilization machines across almost all railway networks in Indonesia. This shortage becomes more severe when only equipment manufactured after the year 2000 is considered, highlighting the need for additional procurement and redistribution of equipment to ensure optimal ballast maintenance.
ANALISIS REKAYASA LALU LINTAS SIMPANG EMPAT MANNA KAMPUS GODEAN, JALAN YOGYAKARTA - DEMAKIJO, NGESTIHARJO, KASIHAN, BANTUL Susanto, Nur Budi; Haryanto, Iman; Hidayat, Nursyamsu; Wiryanta; Aryaradjasa, Renno; Putri, Ferrolinna Cendykia; Sektiaji, Hutama
Jurnal Teknik Sipil dan Arsitektur Vol 31 No 1 (2026): Jurnal Teknik Sipil dan Arsitektur
Publisher : Fakultas Teknik Universitas Tunas Pembangunan Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36728/jtsa.v31i1.5919

Abstract

Yogyakarta – Demakijo Road, better known as Godean Road, is a primary collector road in the Special Region of Yogyakarta that connects the city of Yogyakarta, Bantul Regency, and Sleman Regency. Along Yogyakarta – Demakijo, there are several 3-arm and 4-arm road intersections that connect to the surrounding areas. This study analyzes the traffic performance and provides engineering recommendations for the Manna Kampus Godean Four-Arm Intersection on Yogyakarta-Demakijo Road, Ngestiharjo, Kasihan, Bantul. The research was prompted by the policy of closing right-turn access via water barriers, forcing vehicles to make U-turns and creating weaving movements. The analysis method employed the 2023 Indonesian Road Capacity Manual (PKJI) to evaluate the performance of the four existing weaving sections. The results indicate that all sections suffer from a very high degree of saturation (DS), exceeding 1.5, signifying overcapacity conditions. Traffic delays were also recorded, ranging from 2.01 to 2.95 seconds/pcu. To achieve the ideal DS of ? 0.85, simulations recommend widening the weaving sections to 11-16 meters. However, a cost analysis reveals that land acquisition alone would require a minimum budget of IDR 70 billion, coupled with potential social conflicts. As an alternative, reactivating the traffic signals (APILL) could be considered but necessitates further in-depth study on vehicle movement characteristics.
ANALISIS REKAYASA LALU LINTAS SIMPANG EMPAT MANNA KAMPUS GODEAN, JALAN YOGYAKARTA - DEMAKIJO, NGESTIHARJO, KASIHAN, BANTUL Susanto, Nur Budi; Haryanto, Iman; Hidayat, Nursyamsu; Wiryanta; Aryaradjasa, Renno; Putri, Ferrolinna Cendykia; Sektiaji, Hutama
Jurnal Teknik Sipil dan Arsitektur Vol 31 No 1 (2026): Jurnal Teknik Sipil dan Arsitektur
Publisher : Fakultas Teknik Universitas Tunas Pembangunan Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36728/jtsa.v31i1.5919

Abstract

Yogyakarta – Demakijo Road, better known as Godean Road, is a primary collector road in the Special Region of Yogyakarta that connects the city of Yogyakarta, Bantul Regency, and Sleman Regency. Along Yogyakarta – Demakijo, there are several 3-arm and 4-arm road intersections that connect to the surrounding areas. This study analyzes the traffic performance and provides engineering recommendations for the Manna Kampus Godean Four-Arm Intersection on Yogyakarta-Demakijo Road, Ngestiharjo, Kasihan, Bantul. The research was prompted by the policy of closing right-turn access via water barriers, forcing vehicles to make U-turns and creating weaving movements. The analysis method employed the 2023 Indonesian Road Capacity Manual (PKJI) to evaluate the performance of the four existing weaving sections. The results indicate that all sections suffer from a very high degree of saturation (DS), exceeding 1.5, signifying overcapacity conditions. Traffic delays were also recorded, ranging from 2.01 to 2.95 seconds/pcu. To achieve the ideal DS of ? 0.85, simulations recommend widening the weaving sections to 11-16 meters. However, a cost analysis reveals that land acquisition alone would require a minimum budget of IDR 70 billion, coupled with potential social conflicts. As an alternative, reactivating the traffic signals (APILL) could be considered but necessitates further in-depth study on vehicle movement characteristics.
Co-Authors Aryaradjasa, Renno Dhaniswara, Aryadhatu Imam Muthohar Iman Haryanto Nursyamsu Hidayat Putri, Ferrolinna Cendykia Susanto, Nur Budi Wiryanta